Seiko Cal. 3847 - 997

Seiko 3847-997

The 3847-997 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Black dial protected by a Sapphire crystal and offers 70m of water resistance. [seikata-wm-b5c4da78f227]

Also known as: Tuna, Arnie

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
46mm
Case Thickness
12.4mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
70m
Dial Color
Black
Jewels
30j
Frequency
28,800 bph
Power Reserve
61 hours
Year
1971

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